First argument must be a numeric, logical, or char array. Second argument must be a real integer scalar. With flag 'significant', the second input must be positive. With 3 or 5 input arguments, the third input must be either 'decimals' or 'significant'. Parameter name must be 'TieBreaker'. 'TieBreaker' value must be 'fromzero', 'tozero', 'even', 'odd', 'plusinf', or 'minusinf'. First argument must be double or single with more than one input. ROUND does not support complex integers.